1#!/bin/bash 2# 3# Commit changes to backing file 4# 5# Copyright (C) 2009 Red Hat, Inc. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21# creator 22owner=kwolf@redhat.com 23 24seq=`basename $0` 25echo "QA output created by $seq" 26 27here=`pwd` 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34 rm -f "$TEST_IMG.base" 35 rm -f "$TEST_IMG.orig" 36} 37trap "_cleanup; exit \$status" 0 1 2 3 15 38 39# get standard environment, filters and checks 40. ./common.rc 41. ./common.filter 42. ./common.pattern 43 44# Any format supporting backing files 45_supported_fmt qcow qcow2 vmdk qed 46_supported_proto generic 47_supported_os Linux 48_unsupported_imgopts "subformat=monolithicFlat" \ 49 "subformat=twoGbMaxExtentFlat" \ 50 "subformat=twoGbMaxExtentSparse" 51 52# NFS does not support bdrv_reopen_prepare thus qemu-img commit fails. 53if [ "$IMGPROTO" = "nfs" ]; then 54 _notrun "image protocol $IMGPROTO does not support bdrv_commit" 55fi 56 57TEST_OFFSETS="0 4294967296" 58 59TEST_IMG_SAVE="$TEST_IMG" 60TEST_IMG="$TEST_IMG.base" 61 62_make_test_img 6G 63 64echo "Filling base image" 65echo 66 67for offset in $TEST_OFFSETS; do 68 # Some clusters with alternating backing file/image file reads 69 io writev $(( offset )) 512 1024 64 70 71 # Complete backing clusters 72 io writev $(( offset + 64 * 1024)) 65536 65536 1 73done 74_check_test_img 75 76echo "Creating test image with backing file" 77echo 78 79TEST_IMG="$TEST_IMG_SAVE" 80_make_test_img -b "$TEST_IMG.base" 6G 81 82echo "Filling test image" 83echo 84 85for offset in $TEST_OFFSETS; do 86 # Some clusters with alternating backing file/image file reads 87 io writev $(( offset + 512 )) 512 1024 64 88 89 # Complete test image clusters 90 io writev $(( offset + 64 * 1024 + 65536)) 65536 65536 1 91done 92_check_test_img 93 94$QEMU_IMG commit "$TEST_IMG" 95TEST_IMG="$TEST_IMG.base" 96 97echo "Reading from the backing file" 98echo 99 100for offset in $TEST_OFFSETS; do 101 # Some clusters with alternating backing file/image file reads 102 io readv $(( offset )) 512 1024 64 103 io readv $(( offset + 512 )) 512 1024 64 104 105 # Complete test image clusters 106 io readv $(( offset + 64 * 1024)) 65536 65536 1 107 io readv $(( offset + 64 * 1024 + 65536)) 65536 65536 1 108 109 # Empty sectors 110 io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1 111done 112_check_test_img 113 114# success, all done 115echo "*** done" 116rm -f $seq.full 117status=0 118